code_review

code_review is a skill for Claude Code, Codex from jxoesneon/Ciel. It costs 15 tokens per session (264 once invoked), scanned A, original, Apache-2.0.

A code-review tool that examines files or code changes and returns structured feedback, including possible security, quality, and performance issues.

In plain words
What is it for?
Use it to review a file, inspect a pull-request-style change, or request security- or performance-focused feedback with suggested fixes.
Why use it?
It helps find problems before code is merged or released, without requiring a separate manual review for every concern.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/jxoesneon/ciel/code_review
Any agent
npx skills add jxoesneon/Ciel --skill code_review
Clone the repo
git clone --depth 1 https://github.com/jxoesneon/Ciel

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for code_review

README.md
[![agentmods](https://agentmods.dev/badge/skills/jxoesneon/ciel/code_review.svg)](https://agentmods.dev/skills/jxoesneon/ciel/code_review)
Your own site
<a href="https://agentmods.dev/skills/jxoesneon/ciel/code_review"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/code_review.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 264 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00015 $0.00264
Opus 5 $0.00008 $0.00132
Sonnet 5 $0.00003 $0.00053
Haiku 4.5 $0.00002 $0.00026

Measured 3d ago against content hash 86ae7e891d93, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

code_review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

ciel.skill/seed_skills/code_review/SKILL.md · 37 lines

What it actually says

code_review

Review code and produce actionable feedback.

Operations

  • review.file(path) — comprehensive review.
  • review.diff(diff) — PR-style review.
  • review.security(path_or_diff) — security-focused review.
  • review.perf(path_or_diff) — performance-focused.

I/O Contract

io_contract:
  input: { op, target, "focus?" }
  output: { findings: [ { severity, file, line, issue, suggestion } ] }
  idempotent: true
  side_effects: []

Output

Findings are structured for downstream consumption by improvement flows or surfaced to the user.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 37 lines · 15 tokens per session scan A 86ae7e891d93

Subscribe to this mod's changes

code_review is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed 3d ago), licensed Apache-2.0. It adds 15 tokens to every session and 264 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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